package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class SetmealServiceImpl implements SetmealService {

    @Autowired
    private SetmealMapper setmealMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;
    /**
     * 新增套餐
     * @param setmealDTO
     */
    @Override
    public void save(SetmealDTO setmealDTO) {

        Setmeal setmeal=new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        //新增套餐 setmeal表插入数据
        setmealMapper.insert(setmeal);

        Long setmealId=setmeal.getId();
        List<SetmealDish> setmealDishes= setmealDTO.getSetmealDishes();
        if(setmealDishes != null && setmealDishes.size() >0) {
            setmealDishes.forEach(setmealDish -> {
                setmealDish.setSetmealId(setmealId);
            });
            //新增套餐关联菜品 setmeal_dish表插入n条数据
            setmealDishMapper.insertBatch(setmealDishes);
        }
    }

    /**
     * 分页查询
     * @param setmealPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(),setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page=setmealMapper.pageQuery(setmealPageQueryDTO);
        Long total=page.getTotal();
        List<SetmealVO> records=page.getResult();
        return new PageResult(total,records);
    }

    /**
     * 批量删除套餐
     * @param ids
     */
    @Override
    public void delete(List<Long> ids) {

        //是否启售 启售不删
        for (Long id : ids) {
            Setmeal setmeal=setmealMapper.getById(id);
            if(setmeal.getStatus() == StatusConstant.DISABLE){
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        }
        //将套餐以及关联菜品都删了
        setmealMapper.deleteSetmeal(ids);
        setmealDishMapper.deleteSetmealDish(ids);

    }

    /**
     * 根据id查询套餐以及关联菜品
     * @param id
     * @return
     */
    @Override
    public SetmealVO getSetmealAndDishesById(Long id) {

        SetmealVO setmealVO=new SetmealVO();
        //根据id查询套餐
        Setmeal setmeal=setmealMapper.getById(id);

        //根据套餐id查询关联菜品
        List<SetmealDish> setmealDishes=setmealDishMapper.getDishesBySetmealID(id);

        //封装成SetmealVo
        BeanUtils.copyProperties(setmeal,setmealVO);
        setmealVO.setSetmealDishes(setmealDishes);
        return setmealVO;
    }

    /**
     * 更改套餐以及关联菜品
     * @param setmealDTO
     */
    @Override
    public void updateWithDishes(SetmealDTO setmealDTO) {
        Setmeal setmeal=new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        //更改套餐
        setmealMapper.update(setmeal);
        //删除套餐中的菜品
        setmealDishMapper.deleteSetmealDishById(setmealDTO.getId());
        //插入套餐中的菜品
        List<SetmealDish> setmealDishes=setmealDTO.getSetmealDishes();
        if(setmealDishes!=null && setmealDishes.size()>0){
            for (SetmealDish setmealDish : setmealDishes) {
                setmealDish.setSetmealId(setmealDTO.getId());
            }
            setmealDishMapper.insertBatch(setmealDTO.getSetmealDishes());
        }
    }

    /**
     * 起售，停售套餐
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Setmeal setmeal=new Setmeal();
        setmeal.setId(id);
        setmeal.setStatus(status);
        setmealMapper.update(setmeal);
    }

    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}
